Follow-up to the big reorg PR #438

Job	Run time
prepare	4s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=native)	1m 14s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=x86-64)	1m 18s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=native)	1m 6s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=x86-64)	54s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=native)	1m 13s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=x86-64)	1m 12s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=native)	53s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=x86-64)	59s
Build with Pip (windows-2022, 3.8, msvc, /arch:AVX2)	11m 33s
Build with Pip (windows-2022, 3.8, msvc, /arch:SSE2)	11m 34s
Build with Pip (windows-2022, 3.8, llvm, /arch:AVX2)	12m 16s
Build with Pip (windows-2022, 3.8, llvm, /arch:SSE2)	12m 29s
Build with Pip (windows-2022, 3.11, msvc, /arch:AVX2)	11m 46s
Build with Pip (windows-2022, 3.11, msvc, /arch:SSE2)	11m 45s
Build with Pip (windows-2022, 3.11, llvm, /arch:AVX2)	12m 2s
Build with Pip (windows-2022, 3.11, llvm, /arch:SSE2)	11m 26s
Build with Pip (macos-13, 3.8, llvm, -march=native)	2m 57s
Build with Pip (macos-13, 3.8, llvm, -march=x86-64)	3m 48s
Build with Pip (macos-13, 3.8, gcc-14, -march=native)	2m 20s
Build with Pip (macos-13, 3.8, gcc-14, -march=x86-64)	1m 51s
Build with Pip (macos-13, 3.11, llvm, -march=native)	2m 41s
Build with Pip (macos-13, 3.11, llvm, -march=x86-64)	4m 13s
Build with Pip (macos-13, 3.11, gcc-14, -march=native)	2m 26s
Build with Pip (macos-13, 3.11, gcc-14, -march=x86-64)	2m 17s
	2h 6m 17s

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